Filter tube injector



FIG. 1 is a front perspective view of a filter tube injector, showing my new design in a closed position;

FIG. 2 is an alternate front perspective view thereof;

FIG. 3 is a bottom, rear perspective view thereof;

FIG. 4 is a top perspective view thereof, shown in a partially open position;

FIG. 5 is an alternate top perspective view thereof, shown in a fully open and retracted position;

FIG. 6 is an alternate top perspective view thereof, shown in a partially open position; and,

FIG. 7 is an alternate top view thereof, shown in a closed position with the top portion retracted.

Portions of the article shown in broken lines form no part of the claim. 

The ornamental design for a filter tube injector, as shown and described. 